EP1747329A1 - Elements de construction - Google Patents

Elements de construction

Info

Publication number
EP1747329A1
EP1747329A1 EP05729492A EP05729492A EP1747329A1 EP 1747329 A1 EP1747329 A1 EP 1747329A1 EP 05729492 A EP05729492 A EP 05729492A EP 05729492 A EP05729492 A EP 05729492A EP 1747329 A1 EP1747329 A1 EP 1747329A1
Authority
EP
European Patent Office
Prior art keywords
acoustic
laminate according
viscoelastic
previous
acoustic laminate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05729492A
Other languages
German (de)
English (en)
Other versions
EP1747329A4 (fr
Inventor
Philippe Pierre Marie Joseph Doneux
Bela Takacs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004902021A external-priority patent/AU2004902021A0/en
Application filed by Individual filed Critical Individual
Publication of EP1747329A1 publication Critical patent/EP1747329A1/fr
Publication of EP1747329A4 publication Critical patent/EP1747329A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7453—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling
    • E04B2/7457—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling with wallboards attached to the outer faces of the posts, parallel to the partition
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E04B2001/8466—Solid slabs or blocks layered with an intermediate layer formed of lines or dots of elastic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]

Definitions

  • This invention relates to construction elements suitable for use in constructing internal or external walls, ceilings, roofs, floors and the like - where reduction of transmission of sound from one side to another is important.
  • the sound transmission loss of a wall partition, ceiling, roofs or floor are determined by physical factors such as mass and stiffness. A complex interplay of factors works to prevent or allow the transmission of sound through surfaces.
  • a double layer assembly such as plasterboard on wood or metal framing, the depth of air spaces, the presence or absence of sound absorbing material, and the degree of mechanical coupling between layers critically affect sound transmission losses.
  • the mass per unit area of a material is the most important factor in controlling the transmission of sound through the material.
  • the so-called mass law is worth repeating here, as it applies to most materials at most frequencies:
  • TL 20 1og 10 (m s f) - 48.
  • TL transmission loss (dB)
  • m s mass per unit area (kg/m 2 )
  • f frequency of the sound (Hz)
  • Stiffness of the material is another factor which influences TL. Stiffer materials exhibit "coincidence dips" which are not explained by the above mass law.
  • the Sound Transmission Loss of a dividing structure separating two spaces varies with frequency. If the structure has a degree of stiffness, incident acoustic energy causes the structure to vibrate which re-radiates the acoustic energy on the other side of the structure. Low frequency re-radiation is mainly controlled by the structure stiffness. At about an octave above the lowest resonance frequency of the barrier, the mass of the structure takes over control of the re-radiation and dominates the sound reduction performance, and the mass law (above) indicates that doubling the mass of the structure increases the structure's noise attenuation performance by approximately 6dB.
  • High frequency incident acoustic energy causes ripple-, or bending- waves of the surfaces of the structure. Unlike compression waves, the velocity of bending waves increases with frequency. Every 'stiff panel construction' has a critical or coincidence frequency which considerably reduces the Sound Transmission Loss of structural panel construction.
  • a common coincidence frequency occurs between 1000 & 4000 Hz and is caused by the bending wave speed in the material equaling the speed of sound in the medium surrounding the panel (in this case air). In this frequency range the waves coincide and reinforce each other in phase, greatly reducing the noise reduction performance of the panel at approximately the critical frequency.
  • the present invention seeks to ameliorate one or more of the abovementioned disadvantages of known methods of increasing TL such as higher cost, mass & reduced available space.
  • an acoustic laminate suitable for use in wall, floor and ceiling assemblies and other dividing structure assemblies, the laminate including: a viscoelastic acoustic barrier being in the form of discrete, spaced apart sections or a continuous layer; and a construction panel, the barrier affixed to one or more panel faces of the construction panel.
  • the construction panel is plasterboard, medium-density fibreboard, plywood, fibre-cement sheeting or timber.
  • construction panel is to be taken to include those panels constructed from fibreglass, composites such as carbon fibre, sheets used in domestic construction of walls, glass-reinforced plastics, plasterboard, medium-density fibreboard, plywood, fibre-cement sheeting or timber. Excluded from the definition are steel sheets, aluminium, C-beams, I-beams, structural supports and the like.
  • panel is to be taken to include a panel having contours or curvature such as for example, sinusoidal, or of course completely flat.
  • the construction panel is affixed to the viscoelastic acoustic barrier layer by adhesive.
  • the viscoelastic acoustic barrier is poured onto the construction panel and cures on the panel, bonding to the panel during curing.
  • the viscoelastic acoustic barrier layer is affixed to the construction panel in strips along an axis parallel to respective panel faces.
  • a matrix of viscoelastic pads are affixed to the construction panel across respective panel faces.
  • a second layer of construction panel is affixed to an outer face of the viscoelastic barrier or strips or pads in order to provide a three-layer laminate, for captive-, or constrained-layer damping-type effect.
  • the viscoelastic acoustic barrier layer has a density within a range of 1000 kg/m 3 to 3000kg/m 3 .
  • the viscoelastic acoustic barrier layer has a surface density of approximately 2.5 kg/m 2 .
  • the viscoelastic acoustic barrier layer has a thickness below 6mm.
  • the viscoelastic acoustic barrier layer has a thickness of 1.7mm.
  • the viscoelastic acoustic barrier layer has a density is 1470kg/m 3 .
  • the viscoelastic acoustic barrier layer is a polymeric elastomer impregnated with material which in preferred forms is a particulate material.
  • the filler material is calcium carbonate.
  • the viscoelastic acoustic barrier layer is faced on one side with a nonwoven polyester of thickness approximately 0.05mm.
  • the viscoelastic acoustic barrier layer is faced on the other side of the viscoelastic barrier or strips or pads by an aluminium film reinforced with polyester as a water barrier.
  • the viscoelastic acoustic barrier layer has a Young's Modulus of less than 344kPa.
  • the acoustic laminate is incorporated into a wall structure utilising staggered studs and a cavity filled with polyester batts or other sound absorptive material.
  • the viscoelastic acoustic barrier layer is in the form of a composition which includes water, gelatine, glycerine and a filler material.
  • the composition includes: 5 - 40 wt% water 5 - 30 wt% gelatine 5 - 40 wt% glycerine; and 20 - 60 wt% filler material.
  • the composition includes 1 to 15 wt% of a group II metal chloride such as for example calcium chloride or magnesium chloride.
  • a group II metal chloride such as for example calcium chloride or magnesium chloride.
  • the composition includes 2 to 10 wt% magnesium chloride.
  • the composition further includes 0.5 to 7 wt% starch or gluten.
  • starch is provided from the addition of cornflour to the composition.
  • the filler material is a non-reactive material with a high density.
  • the density is greater than 1 g/cm 3 .
  • the density of the filler material is approximately 2.0 to 3.0 g/cm 3 .
  • the filler material is chosen from any non-reactive material with a high density such as for example barium sulphate or KAOLIN.
  • the composition includes: 10 - 25 wt% water 5 - 20 wt% gelatine 10 - 25 wt% glycerine; 40 - 60 wt% filler material; 1 - 10 wt% magnesium chloride; and 0.5 - 3 wt% starch;
  • composition further includes constituents such as for example ethylene and/or propylene glycols; polyvinyl alcohols; deodorisers; anti-oxidants and/or fungicides.
  • constituents such as for example ethylene and/or propylene glycols; polyvinyl alcohols; deodorisers; anti-oxidants and/or fungicides.
  • a wall construction is provided, incorporating additional layers of construction panel are provided, affixed to staggered studs.
  • the a wall construction which includes absorbent material in the form of polyester batts.
  • Figure 1 is a schematic representation of a reference wall (typical of current construction method) used in testing to give a benchmark for measured results;
  • Figure 2 is a schematic representation of a wall constructed in part using components of a preferred embodiment of the present invention
  • Figure 3 is a graph showing results of benchmark transmission loss testing of the reference wall shown in Figure 1 (an STC60 curve is superposed on the test results);
  • Figure 4 is a graph showing results of transmission loss testing of the wall shown in Figure 2 (an STC63 curve is superposed on the test results);
  • Figure 5 is a graph showing graphs in Figures 3 and 4 superposed on similar axes
  • Figure 6 is a graph showing expected coincidence effects of prior art stiff panels
  • Figure 7 shows Transmission Loss (TL) test results of a reference wall of the prior art displaying coincidence dip effects
  • Figure 8 shows TL test results of a wall treated with preferred embodiments of the present invention, showing the much reduced coincidence dips, if detectable at all;
  • Figure 9 shows TL test results of a wall treated with another preferred embodiment of the present invention - ie spaced viscoelastic strips (an STC curve is superposed on the results, and corrected data is also shown in broken line);
  • Figure 10 shows the composition of the reference wall tested in Figure 9;
  • Figure 11 shows TL test results of a wall treated with yet another preferred embodiment of the present invention - ie viscoelastic pads spaced on a matrix (an STC curve is superposed on the results, and corrected data is also shown in broken line);
  • Figure 12 shows the composition of the reference wall tested in Figure 11.
  • the reference wall is a composite wall consisting of two layers of 13mm thick fire rated plasterboard directly secured to 64mm, 0.75mm steel studs on one side.
  • the wall is wholly repeated in mirror image about a centreline extending between the studs, with a 20mm gap separating the studs.
  • An infill cavity insulation of 50mm glasswool 1 lkg/m 3 is located between one set of the steel studs.
  • a composite wall assembly utilising a preferred embodiment of the present invention is shown at Figure 2 item 20.
  • the composite wall assembly includes a laminate assembly 12 including a layer of 13mm high density plasterboard 14, adhered to one face of a centre lamina of 2.5kg loaded polymeric elastomer shown at 16, which is itself on its other side adhered to a 13mm standard density plasterboard 18.
  • the laminate assembly 12 is affixed to 64mm, 0.6mm thick steel studs 22.
  • a cavity 24 is provided, filled on one side with 50mm thick 48kg/m 3 polyester insulation batts 26.
  • studs 23 are provided, the studs 23 being staggered from studs 22.
  • Affixed to the studs 23 is a laminate assembly 13, a mirror image of the laminate assembly 12.
  • a reference wall and a composite wall were constructed, and their sound transmission performance was tested.
  • a +l.OdB correction was applied during testing to the reference wall to align its glasswool performance with that of the composite wall.
  • FIGS 3, 4 and 5 show the tabulated results graphically.
  • the combined graph ( Figure 5) and table shows an improvement in the frequency regions of 100Hz to 400Hz and from 2000Hz to 5000Hz.
  • Acoustic Performance Index takes into account the cost of the wall compared to its acoustic performance and to the thickness of the wall and the floor space cost. Thickness is a very important consideration as floor space in a typical apartment is AU$6000 per square metre.
  • the composite wall assembly 20 is only 206mm wide and has an acoustic performance that can only be matched by expensive wall systems which are 280mm wide or more.
  • the composite wall system has a high Acoustic Performance Index of R w greater than or equal to 55.
  • damping materials are an efficient and effective means to control vibration and structure-borne radiated noise.
  • 'Damping' is the energy dissipation properties of a material or system under cyclic stress, and damping vibration can significantly reduce the creation of secondary noise problems.
  • the specially formulated non slip viscoelastic strips or pad matrix situated on the construction panel are in contact with the construction panel effectively increasing the vibrations' decay rate. Decay rate is the speed in dB/second at which the vibration reduces after panel excitation has ceased - the higher the decay rate, the better the acoustic performance.
  • a method of adhering the construction panel and viscoelastic barrier together has shown excellent adhering properties, and that is to utilise a pouring head which pours a hot or warm viscoelastic composition directly onto the construction board. The composition cools and then grips the face of the board. This may be used to make sandwiches of the compound, ie a second layer of construction board on to an upper surface of the cooling or curing composition.
  • a wall was constructed as shown in Figure 10, starting on the outside: 13mm standard plasterboard panel 114; viscoelastic barrier 116 in strips 50mm wide, spaced at 50mm intervals along the panel 114; 13mm standard plasterboard panel 118;
  • a wall constructed as shown in Figure 12 has a plurality of 50mm viscoelastic strips 216 spaced with a 150mm gap between each.
  • the TL results appear at Figure 11 and they seem very similar to those shown in Figure 10, the only difference being the spacing between the viscoelastic strips.
  • These results show the mechanism of the trapped air apparently working as a viscoelastic medium which reduces the buildup of transverse waves in the panel, without the mass or expense of an actual viscoelastic medium.
  • the STC and corrected transmission loss data are unexpectedly high for this type of construction.
  • Some wall constructions do not include any absorptive batt material, and the results appear to be better than similar walls without absorptive batts.
  • a feature of a preferred embodiment of the present invention will become better understood from the following example of a preferred but non-limiting embodiment thereof.
  • composition 100 g of water together with 100 g of glycerine and 10 g of starch was mixed and then heated to a temperature of 85 °C. 80 g of gelatine and 20 g of magnesium chloride was then dissolved into the mixture and a gel was formed. 310 g of barium sulphate was then added to the gel providing a composition with good flexibility, elasticity, tensile strength, and density with good film forming properties.
  • the composition had the following composition by weight:
  • composition was then extruded into a flat sheet and bonded onto an aluminium film and then brought down to room temperature whereby the composition cured to form a sheet of composite material of 4mm in thickness that showed excellent sound dampening properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)

Abstract

Selon un aspect de la présente invention, il est prévu un lamellé acoustique apte à être utilisé dans des ensembles de paroi, de plancher et de plafond et d'autres ensembles de structure de séparation, le lamellé comportant: un barrière sonore viscoélastique sous la forme de sections distinctes espacées ou d'une couche continue; et un panneau de construction, la barrière étant fixée à une ou des faces du panneau de construction.
EP05729492A 2004-04-15 2005-04-11 Elements de construction Withdrawn EP1747329A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2004902021A AU2004902021A0 (en) 2004-04-15 Construction board
AU2004904486A AU2004904486A0 (en) 2004-08-10 Construction elements
AU2004906645A AU2004906645A0 (en) 2004-11-22 A composition for producing sheet material
PCT/AU2005/000520 WO2005100709A1 (fr) 2004-04-15 2005-04-11 Elements de construction

Publications (2)

Publication Number Publication Date
EP1747329A1 true EP1747329A1 (fr) 2007-01-31
EP1747329A4 EP1747329A4 (fr) 2010-10-27

Family

ID=35150043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05729492A Withdrawn EP1747329A4 (fr) 2004-04-15 2005-04-11 Elements de construction

Country Status (6)

Country Link
US (1) US8448389B2 (fr)
EP (1) EP1747329A4 (fr)
CN (1) CN1981100B (fr)
CA (1) CA2562692C (fr)
NZ (1) NZ551301A (fr)
WO (1) WO2005100709A1 (fr)

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TWI504655B (zh) 2009-04-10 2015-10-21 Saint Gobain Performance Plast 含有彈性體微粒之聲阻尼組合物
WO2010118358A2 (fr) 2009-04-10 2010-10-14 Saint-Gobain Performance Plastics Corporation Compositions d'amortissement acoustique
US8062565B2 (en) * 2009-06-18 2011-11-22 Usg Interiors, Inc. Low density non-woven material useful with acoustic ceiling tile products
KR20110113881A (ko) 2010-04-12 2011-10-19 (주)엘지하우시스 흡차음 성능이 개선된 조립식 벽체 및 그 조립식 구조물
US9179220B2 (en) 2012-07-10 2015-11-03 Google Inc. Life safety device with folded resonant cavity for low frequency alarm tones
US8810426B1 (en) * 2013-04-28 2014-08-19 Gary Jay Morris Life safety device with compact circumferential acoustic resonator
WO2014179844A1 (fr) * 2013-05-09 2014-11-13 Acoustic Space Pty Ltd Matériau insonorisation en feuille à structure cellulaire comprenant de la gélatine et/ou un processus de production de celui-ci
CN103834077B (zh) * 2014-02-27 2016-05-04 上海新安汽车隔音毡有限公司 一种车用等密度不等厚弹性体隔音材料的制造方法
US9725154B2 (en) * 2014-05-13 2017-08-08 The Boeing Company Method and apparatus for reducing structural vibration and noise
US9512613B2 (en) 2015-02-05 2016-12-06 National Gympsum Properties, LLC Sound damping wallboard and method of forming a sound damping wallboard
CA2973272C (fr) * 2015-02-11 2020-02-18 Knauf Gips Kg Construction de cloison seche pour absorption acoustique de resonance
CN107299694B (zh) * 2015-10-10 2019-09-27 龙元明筑科技有限责任公司 一种保温建筑墙体结构
RS61867B1 (sr) * 2016-05-13 2021-06-30 Rockwool Int Sastav veziva za mineralna vlakna koja se sastoje od najmanje jednog hidrokoloida
EP3887467A2 (fr) 2018-11-27 2021-10-06 Avery Dennison Corporation Constructions de bande multicouche pour l'amortissement des vibrations à basse température avec adhérence modulable
CA3064101A1 (fr) 2018-12-06 2020-06-06 National Gypsum Properties, Llc Plaque de platre d`insonorisation et methode de construction d`une plaque de platre d`insonorisation
EP4077825B1 (fr) * 2019-12-16 2026-02-04 Knauf Gips KG Cloison sèche, kit et procédé de construction d'une cloison sèche
CA3121091A1 (fr) 2020-06-05 2021-12-05 Gold Bond Building Products, Llc Plaque de platre d'insonorisation et methode de construction d'une plaque de platre d'insonorisation

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Also Published As

Publication number Publication date
CA2562692A1 (fr) 2005-10-27
US20080314680A1 (en) 2008-12-25
CA2562692C (fr) 2011-07-12
WO2005100709A1 (fr) 2005-10-27
CN1981100A (zh) 2007-06-13
US8448389B2 (en) 2013-05-28
NZ551301A (en) 2011-01-28
CN1981100B (zh) 2011-05-18
EP1747329A4 (fr) 2010-10-27

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